| Full text | |
| Author(s): |
Romao, Wanderson
;
Vaz, Boniek G.
;
Lalli, Priscila M.
;
Bueno, Maria Izabel M. S.
;
Correa, Deleon N.
;
Telles, Virginia L. C. N.
;
de Castro, Eustaquio V. R.
;
Eberlin, Marcos N.
Total Authors: 8
|
| Document type: | Journal article |
| Source: | JOURNAL OF FORENSIC SCIENCES; v. 57, n. 2, p. 5-pg., 2012-03-01. |
| Abstract | |
Using desorption/ionization techniques such as easy ambient sonic-spray ionization mass spectrometry (EASI-MS), it is possible to analyze documents of Brazilian vehicles for authenticity, providing a chemical profile directly from the surface of each document. A method for the detection of counterfeit documents is described, and the falsification procedure is elucidated. Forty authentic and counterfeit documents were analyzed by both positive and negative ion modes, EASI(+/-)-MS. EASI(+)-MS results identified the presence of (bis(2-ethylhexyl)phthalate plasticizer and of dihexadecyldimethylammonium biocide in both types of documents. For EASI(-)-MS results, the 4-octyloxybenzoic acid additive ([M + H]+: m/z 249) is present only in counterfeit documents. It was also found that counterfeit vehicle documents are produced via Laserjet printers. Desorption/ionization techniques, such as EASI-MS, offer therefore, an intelligent way to characterize the counterfeiting method. (AU) | |
| FAPESP's process: | 09/07168-9 - New applications of mass spectrometry in Forensic Chemistry |
| Grantee: | Wanderson Romão |
| Support Opportunities: | Scholarships in Brazil - Doctorate |